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<div id="overview"><a href="../../../../../../../../../../../../apidocs/org/azeckoski/reflectutils/converters/ArrayConverter.html">View Javadoc</a></div><pre>

<a name="1" href="#1">1</a>   <em>/**<em>*</em></em>
<a name="2" href="#2">2</a>   <em> * $Id: ArrayConverter.html 10 2008-10-01 10:56:15Z azeckoski $</em>
<a name="3" href="#3">3</a>   <em> * $URL: http://reflectutils.googlecode.com/svn/maven/site/xref/org/azeckoski/reflectutils/converters/ArrayConverter.html $</em>
<a name="4" href="#4">4</a>   <em> * ArrayConverter.java - genericdao - Sep 10, 2008 1:36:28 PM - azeckoski</em>
<a name="5" href="#5">5</a>   <em> **************************************************************************</em>
<a name="6" href="#6">6</a>   <em> * Copyright (c) 2008 Aaron Zeckoski</em>
<a name="7" href="#7">7</a>   <em> * Licensed under the Apache License, Version 2.0</em>
<a name="8" href="#8">8</a>   <em> * </em>
<a name="9" href="#9">9</a>   <em> * A copy of the Apache License has been included in this </em>
<a name="10" href="#10">10</a>  <em> * distribution and is available at: <a href="http://www.apache.org/licenses/LICENSE-2.0.txt" target="alexandria_uri">http://www.apache.org/licenses/LICENSE-2.0.txt</a></em>
<a name="11" href="#11">11</a>  <em> *</em>
<a name="12" href="#12">12</a>  <em> * Aaron Zeckoski (azeckoski @ gmail.com) (aaronz @ vt.edu) (aaron @ caret.cam.ac.uk)</em>
<a name="13" href="#13">13</a>  <em> */</em>
<a name="14" href="#14">14</a>  
<a name="15" href="#15">15</a>  <strong>package</strong> org.azeckoski.reflectutils.converters;
<a name="16" href="#16">16</a>  
<a name="17" href="#17">17</a>  <strong>import</strong> java.lang.reflect.Array;
<a name="18" href="#18">18</a>  <strong>import</strong> java.util.Collection;
<a name="19" href="#19">19</a>  <strong>import</strong> java.util.Map;
<a name="20" href="#20">20</a>  
<a name="21" href="#21">21</a>  <strong>import</strong> org.azeckoski.reflectutils.ConstructorUtils;
<a name="22" href="#22">22</a>  <strong>import</strong> org.azeckoski.reflectutils.ConversionUtils;
<a name="23" href="#23">23</a>  <strong>import</strong> org.azeckoski.reflectutils.converters.api.VariableConverter;
<a name="24" href="#24">24</a>  
<a name="25" href="#25">25</a>  
<a name="26" href="#26">26</a>  <em>/**<em>*</em></em>
<a name="27" href="#27">27</a>  <em> * Handles conversions to arrays from various types (including other arrays),</em>
<a name="28" href="#28">28</a>  <em> * also handles the special case of a comma separated list of strings which</em>
<a name="29" href="#29">29</a>  <em> * it will attempt to convert into an array of strings or whatever was requested</em>
<a name="30" href="#30">30</a>  <em> * </em>
<a name="31" href="#31">31</a>  <em> * @author Aaron Zeckoski (azeckoski @ gmail.com)</em>
<a name="32" href="#32">32</a>  <em> */</em>
<a name="33" href="#33">33</a>  <strong>public</strong> <strong>class</strong> <a href="../../../../org/azeckoski/reflectutils/converters/ArrayConverter.html">ArrayConverter</a> implements <a href="../../../../org/azeckoski/reflectutils/converters/api/VariableConverter.html">VariableConverter</a> {
<a name="34" href="#34">34</a>  
<a name="35" href="#35">35</a>      <em class="comment">/*<em class="comment"> (non-Javadoc)</em></em>
<a name="36" href="#36">36</a>  <em class="comment">     * @see org.azeckoski.reflectutils.converters.api.VariableConverter#canConvert(java.lang.Object, java.lang.Class)</em>
<a name="37" href="#37">37</a>  <em class="comment">     */</em>
<a name="38" href="#38">38</a>      <strong>public</strong> <strong>boolean</strong> canConvert(Object value, Class&lt;?> toType) {
<a name="39" href="#39">39</a>          <strong>if</strong> ( ConstructorUtils.isClassArray(toType)) {
<a name="40" href="#40">40</a>              <strong>return</strong> <strong>true</strong>;
<a name="41" href="#41">41</a>          }
<a name="42" href="#42">42</a>          <strong>return</strong> false;
<a name="43" href="#43">43</a>      }
<a name="44" href="#44">44</a>  
<a name="45" href="#45">45</a>      <strong>protected</strong> <a href="../../../../org/azeckoski/reflectutils/ConversionUtils.html">ConversionUtils</a> getConversionUtils() {
<a name="46" href="#46">46</a>          <strong>return</strong> ConversionUtils.getInstance();
<a name="47" href="#47">47</a>      }
<a name="48" href="#48">48</a>  
<a name="49" href="#49">49</a>      <em class="comment">/*<em class="comment"> (non-Javadoc)</em></em>
<a name="50" href="#50">50</a>  <em class="comment">     * @see org.azeckoski.reflectutils.converters.api.VariableConverter#convert(java.lang.Object, java.lang.Class)</em>
<a name="51" href="#51">51</a>  <em class="comment">     */</em>
<a name="52" href="#52">52</a>      @SuppressWarnings(<span class="string">"unchecked"</span>)
<a name="53" href="#53">53</a>      <strong>public</strong> &lt;T> T convert(Object value, Class&lt;T> toType) {
<a name="54" href="#54">54</a>          T convert = <strong>null</strong>;
<a name="55" href="#55">55</a>          Class&lt;?> fromType = value.getClass();
<a name="56" href="#56">56</a>          Object toConvert = value;
<a name="57" href="#57">57</a>  
<a name="58" href="#58">58</a>          Class&lt;?> componentType = toType.getComponentType();
<a name="59" href="#59">59</a>          <strong>if</strong> ( ConstructorUtils.isClassArray(fromType) ) {
<a name="60" href="#60">60</a>              <em class="comment">// from array - to different type of array</em>
<a name="61" href="#61">61</a>              <strong>int</strong> length = Array.getLength(toConvert);
<a name="62" href="#62">62</a>              convert = (T) Array.newInstance(componentType, length);
<a name="63" href="#63">63</a>              <strong>for</strong> (<strong>int</strong> i = 0; i &lt; length; i++) {
<a name="64" href="#64">64</a>                  Object object = Array.get(toConvert, i);
<a name="65" href="#65">65</a>                  object = getConversionUtils().convert(object, componentType); <em class="comment">// convert each value</em>
<a name="66" href="#66">66</a>                  Array.set(convert, i, object);
<a name="67" href="#67">67</a>              }
<a name="68" href="#68">68</a>          } <strong>else</strong> <strong>if</strong> ( ConstructorUtils.isClassCollection(fromType) ) {
<a name="69" href="#69">69</a>              <em class="comment">// from collection</em>
<a name="70" href="#70">70</a>              Collection collection = (Collection) toConvert;
<a name="71" href="#71">71</a>              <strong>int</strong> length = collection.size();
<a name="72" href="#72">72</a>              convert = (T) Array.newInstance(componentType, length);
<a name="73" href="#73">73</a>              <strong>int</strong> i = 0;
<a name="74" href="#74">74</a>              <strong>for</strong> (Object object : collection) {
<a name="75" href="#75">75</a>                  object = getConversionUtils().convert(object, componentType); <em class="comment">// convert each value</em>
<a name="76" href="#76">76</a>                  Array.set(convert, i, object);
<a name="77" href="#77">77</a>                  i++;
<a name="78" href="#78">78</a>              }
<a name="79" href="#79">79</a>          } <strong>else</strong> <strong>if</strong> ( ConstructorUtils.isClassMap(fromType) ) {
<a name="80" href="#80">80</a>              <em class="comment">// from map</em>
<a name="81" href="#81">81</a>              Map map = (Map) toConvert;
<a name="82" href="#82">82</a>              <strong>int</strong> length = map.size();
<a name="83" href="#83">83</a>              convert = (T) Array.newInstance(componentType, length);
<a name="84" href="#84">84</a>              <strong>int</strong> i = 0;
<a name="85" href="#85">85</a>              <strong>for</strong> (Object object : map.values()) {
<a name="86" href="#86">86</a>                  object = getConversionUtils().convert(object, componentType); <em class="comment">// convert each value</em>
<a name="87" href="#87">87</a>                  Array.set(convert, i, object);
<a name="88" href="#88">88</a>                  i++;
<a name="89" href="#89">89</a>              }
<a name="90" href="#90">90</a>          } <strong>else</strong> {
<a name="91" href="#91">91</a>              <em class="comment">// from scalar</em>
<a name="92" href="#92">92</a>              String valueString = toConvert.toString();
<a name="93" href="#93">93</a>              <strong>if</strong> (<span class="string">""</span>.equals(valueString)) {
<a name="94" href="#94">94</a>                  <em class="comment">// empty string becomes empty array</em>
<a name="95" href="#95">95</a>                  convert = (T) Array.newInstance(componentType, 0);
<a name="96" href="#96">96</a>              } <strong>else</strong> <strong>if</strong> (valueString.indexOf(',') > 0) {
<a name="97" href="#97">97</a>                  <em class="comment">// support comma separated string to array</em>
<a name="98" href="#98">98</a>                  String[] parts = valueString.split(<span class="string">","</span>);
<a name="99" href="#99">99</a>                  convert = (T) Array.newInstance(componentType, parts.length);
<a name="100" href="#100">100</a>                 <strong>for</strong> (<strong>int</strong> i = 0; i &lt; parts.length; i++) {
<a name="101" href="#101">101</a>                     Object object = getConversionUtils().convert(parts[i].trim(), componentType); <em class="comment">// convert each value</em>
<a name="102" href="#102">102</a>                     Array.set(convert, i, object);
<a name="103" href="#103">103</a>                 }
<a name="104" href="#104">104</a>             } <strong>else</strong> {
<a name="105" href="#105">105</a>                 <em class="comment">// just put it in the array</em>
<a name="106" href="#106">106</a>                 convert = (T) Array.newInstance(componentType, 1);
<a name="107" href="#107">107</a>                 Object object = getConversionUtils().convert(toConvert, componentType); <em class="comment">// convert each value</em>
<a name="108" href="#108">108</a>                 Array.set(convert, 0, object);
<a name="109" href="#109">109</a>             }
<a name="110" href="#110">110</a>         }
<a name="111" href="#111">111</a>         <strong>return</strong> convert;
<a name="112" href="#112">112</a>     }
<a name="113" href="#113">113</a> 
<a name="114" href="#114">114</a> }
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